Home / 74,812.32-103,279.14-57,778.29

Finding the Fourth Proportional to 74,812.32, 103,279.14 and 57,778.29

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Solution

The fourth proportional to 74,812.32, 103,279.14 and 57,778.29 is: 79,763.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,812.32 : 103,279.14 = 57,778.29 : x
  2. Step 2: Convert to fraction form
    74,812.32/103,279.14 = 57,778.29/x
  3. Step 3: Cross multiply
    74,812.32x = 103,279.14 × 57,778.29
  4. Step 4: Simplify right side
    74,812.32x = 5,967,292,101.87
  5. Step 5: Solve for x
    x = 5,967,292,101.87/74,812.32
  6. Step 6: Final answer
    x = 79,763.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.